Ernest p



(No Model.)

B. P. WARNER.

CONNECTION FOR OOMMUTATORS AND ARMATURE WIRES.

Patented Dec. 6, 1892.

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172226771397 QZZZ S65 77/6575 7. Warner $440120 772$ 1 I 1 UNITED STATES PATENT OFFICE.

ERNEST P. WARNER, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE WESTERN ELECTRIC COMPANY, OF SAME PLACE.

CONNECTION FOR COMMUTATORS AND ARMATURE-WIRES.

SPECIFICATION forming part of Letters Patent No. 487,307, dated December 6, 1892.

Application filed March 5, 1892. Serial No. 423,881. (No model.)

To all whom it may concern.- bear by the screw the button distributes the 55 Be it known that I, ERNEST P. WARNER, a pressure equally upon the wires, thus comcitizen of the United States, residing at Chipensating for any irregularity in the size cago, in the county of Cook and State of 1111- thereof or in the holes a o. This secures an nois, have invented a certain new and useful equal frictional engagement between the Improvement in Connections for Commuwires and the commutator-segment in each 60 tators and Armature-Wires, (Case No. 45,) of case. At the same time by unscrewing the which the following is a full, clear, concise, screw f the pressure upon the button h is reand exact description, reference being had to lieved and the Wires can be easily removed, the accompanying drawings, forminga part of the commutator taken off and replaced, and

this specification. the wires refastened. 65

My invention relates to a connection for It is obvious that my invention is applicommutators and armature-wires. Its object cable not only to the attachment of armatureis to provide a means for connectingthe said wires to commutator-segments, but also to all wires t0 the segments of a commutator in a kinds of electrical connections.

dynamo machine or motor, which will be at Having thus described my invention, what 70 once secure and also allow the wires to be Iclaim as new, and desire to secure by Letters readily detached upon occasion. Patent, is

My invention will be more readily under- 1. In a commutator, the combination, with stood by reference to the accompanying drawthe connecting-wires d, of the commutatorings, in \vhichbar'provided with the holes 0 c and the hole 7 Figure 1 is a side elevation of commutatore at right angles thereto, the screw fiadapted segment, showing the ends of the wires from to screw in said hole 6, and a button or plate the armature inserted therein. Fig. 2 is an h, adapted to rest upon the wires and receive end view of the commutator-segment, showthe pressure of said screw f, substantially as ing the holes in which the wires from'the ardescribed. 8 mature are to be inserted. Fig. 3 is an end 2. The combination, with the connectingview of commutator-segment in cross-section, wires inserted in holes in the commutatorshowing the means for securing the wires segment,of a plate adapted to rest upon said 0 thereto. wires and a screw adapted to bear by its end Similar letters of reference are used to inupon said plate, whereby the pressure of said 85 dicate similar parts of the device in the difscrew is distributed equally between said ferent figures. wires, substantially as described.

The commutator-segment a may be of any 3. The combination, with a commutator- 3 5 desired form. Ausual form is that shown in segment provided with holes, of wires insertthe drawings. Upon the projecting arm 22 is ed therein, a plate adapted to rest upon said 90 placed the means of my invention for securwires, and a screw adapted to always press ing the conducting-wires through the comupon said plate at or near the center thereof mutator-segment. Two holes 0 c are drilled irrespective of the relative sizes of the wires,

40 intothe endof thisarmb,theseholesbeingprefsubstantially as described.

erablyaboutthe sizeof theconnectingwires d, 4. The combination, with a commutator- 95 which are to be inserted therein. From the segment provided with holes, of wires insertouter surface of this arm I) is drilled a hole e, ed therein, a plate adapted to rest upon said extending downward to the point of inter- Wires, and a screw adapted to bear by its end section with the two holes 0 c. This hole is upon said plate intermediate between said adapted to receive the screw f, which is wires, whereby the pressure of said screw is I00 adapted to be screwed into said hole until it distributed between said wires, substantially is flush with the outer surface of the arm b. as described.

The end 9 of the screw f is rounded, and the In witness whereof I hereunto subscribe my button h, of about the same diameter as the name this 6th day of February, A. D. 1892.

hole e, is placed in said hole so as to rest ERNEST P. IVARNER. upon the wires. The rounded surface of the IVitnesses: screw f bears upon the button it at or near HARRY CRAGG,

its center, so that as pressure is brought to GEORGE L. CRAGG. 

